Global Patent Index - EP 1094393 A2

EP 1094393 A2 2001-04-25 - Procedure for the prevention of unauthorized access to a memory

Title (en)

Procedure for the prevention of unauthorized access to a memory

Title (de)

Verfahren zur Verhinderung eines auf einem Speicher unberechtigten Zugriffs

Title (fr)

Procédé pour éviter l'accès non-autorisé à une mémoire

Publication

EP 1094393 A2 (EN)

Application

EP 00122233 A

Priority

DE 19950118 A

Abstract (en)

Procedure for the prevention of unauthorised access to a memory in a procedure for the prevention of unauthorised access to a memory in an integrated circuit (10), which is programmable to execute a desired function, and which contains at least one input-output interface (12), a processor (14) and the memory (16), where in the course of the programming process of the integrated circuit (10), whereby a program code is input into the memory (16) via the input/output interface (12), a program code section specific to the program code is stored in the memory (16) at a pre-determined address under control by the processor (14). At any further attempt to access the memory (16), such access will only be permitted when at least one program code section coinciding with the program code section stored in the memory (16) as part of the previous programming process is fed into the processor (14). <IMAGE>

IPC 1-7 (main, further and additional classification)

G06F 12/14; G06F 1/00

IPC 8 full level (invention and additional information)

G06F 12/14 (2006.01); G06F 21/79 (2013.01)

CPC (invention and additional information)

G06F 21/79 (2013.01); G06F 12/1466 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 1094393 A2 20010425; EP 1094393 A3 20011219; EP 1094393 B1 20060412; AT 323307 T 20060415; DE 19950118 A1 20010426; DE 19950118 C2 20020307; DE 60027248 D1 20060524

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